If you're using it in a game development scenario and it's, well, having to do with game development, I'm pretty sure it'd be acceptable. It strikes me as being the same as asking questions about, say, C#.
What I'd suggest is looking at c#, and looking at all the questions it does have, especially recent ones. There's obviously a whole bunch that are directly GameDev-related. But some willsome will stretch the linestretch the line somewhatsomewhat, and they seem to be acceptable since the underlying intent is still around.
Not every questionNot every question satisfies it, though. There's a lot of cross-overlap with Stack Overflow, but if it's far enough then it'd be off-topic.
In understanding that, I'd expect that MaxScript, which is predominantly but still not exclusively used in game asset creation, would be valid as long as you're still within the realm of asking about game development. Rather than, say, basic scripting elements. Basically, acceptable MaxScript questions that'd get answers would probably be on the same lines as our acceptable C# questions.
That's my interpretation of how it'd be acceptable here.